WO2004023651A1 - Circuit de régulation destiné à un amplificateur haute fréquence - Google Patents

Circuit de régulation destiné à un amplificateur haute fréquence Download PDF

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Publication number
WO2004023651A1
WO2004023651A1 PCT/DE2003/001981 DE0301981W WO2004023651A1 WO 2004023651 A1 WO2004023651 A1 WO 2004023651A1 DE 0301981 W DE0301981 W DE 0301981W WO 2004023651 A1 WO2004023651 A1 WO 2004023651A1
Authority
WO
WIPO (PCT)
Prior art keywords
control circuit
impedance
diodes
circuit according
transformation
Prior art date
Application number
PCT/DE2003/001981
Other languages
German (de)
English (en)
Inventor
Michael Thole
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2004023651A1 publication Critical patent/WO2004023651A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/74—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators
    • H03H7/25—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
    • H03H7/253—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a diode
    • H03H7/255—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a diode the element being a PIN diode

Definitions

  • the invention is based on a control circuit for a high-frequency amplifier, in particular an antenna amplifier.
  • PI ⁇ diode attenuators To improve the modulation strength of AM, FM and TN antenna amplifiers, power controls with PI ⁇ diode attenuators are used. For example, simple shunt diodes with lower attenuation or complex PI or T-PI ⁇ diode attenuators are used.
  • an antenna amplifier with a controllable actuator in the form of a PI ⁇ diode is known.
  • an adaptation network is provided in front of and behind the PI ⁇ diode.
  • GB 2266422 A shows a damping stage with a PI ⁇ diode in the longitudinal branch. This is preceded by another PI ⁇ diode in the shunt arm to reduce the input impedance.
  • a similar damping stage is known from EP 0969596 A 2. There the control signal for the diodes from the
  • the control dynamics in a high-frequency amplifier / antenna amplifier can be increased in a simple and inexpensive manner.
  • an additional PIN diode is connected in the supply voltage branch of the actual actuator PIN diode in the transverse branch, which is short-circuited to ground in terms of radio frequency, that is to say preferably capacitively, and is supplied directly by the control signal / control voltage.
  • the two preferably low-resistance PIN diodes are connected via a transformation network in the series branch, which preferably transforms a low-resistance input impedance into a high-resistance output impedance, so that the damping effect is increased.
  • the control circuit is characterized by a high level of modulation resistance and a very high control range, with control via a single control current
  • the amplifier is protected against ESD interference by preferably high-frequency anti-parallel connection of the PIN diodes.
  • Figure 1 Block diagram of a control circuit according to the invention for a
  • Antenna amplifier Figure 2: The control circuit in detail,
  • Figure 3 The formation of the transformation network of the control circuit as a T element
  • Figure 4 The formation of the transformation network of the control circuit as a PI element.
  • an antenna signal reaches a matching network 6 from a pane antenna 5, with which the antenna 5 is matched to the input impedance of the amplifier 7.
  • the antenna signal is then transmitted via the input PIN
  • Diode attenuator 10 led to the amplifier 7. Behind the amplifier 7 the amplified antenna signal is coupled out and fed to a detector 8. Here the signal strength is measured, compared with a reference signal by means of a comparison device 4 and a current proportional to the power is generated. This current (control signal) for the PIN diodes 1 and 2, supplied via point 16 in FIG.
  • Attenuator as well as another, located in the supply voltage branch, output-side, also low-resistance PIN diode 2 switched through ( Figure 2). As long as the output power is below the reference power and thus the intermodulation products of the amplifier 7 are still low, the current remains at 0 mA and the diodes 1 and 2 have a high resistance. In this operating state
  • This transformation network 3 is permeable to the control current, since a galvanic connection between the PIN diodes 1 and 2 is always provided in its longitudinal branch.
  • T-circuits (FIG. 3) with 2 coils 11 and 12 in the longitudinal branch and a capacitor 13 in the transverse branch or PI circuits (FIG. 4) with a coil 14 in the longitudinal branch and a capacitor 15 on the input and output side are suitable as the transformation network 3 16 in the transverse branch.
  • Shunt diodes which are relatively low-resistance and have a lower attenuation than conventional PIN diodes are preferably suitable as PDSf diodes D1 and D2.
  • the PIN diodes are preferably operated antiparallel in the control circuit with regard to their polarity.
  • control dynamics of> 30 dB can be achieved. This results in a significantly increased modulation resistance of approximately 20 dB compared to conventional solutions.
  • the attenuation control based on the sensation can be used for AM, FM and TV impedance converters for antenna amplifiers.

Landscapes

  • Amplifiers (AREA)
  • Attenuators (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

L'invention concerne un circuit de régulation destiné à un amplificateur haute fréquence, comportant une diode PIN côté entrée (1) disposée dans la branche en dérivation, ainsi qu'une diode PIN côté sortie (2) également disposée dans la branche en dérivation, recevant un signal de régulation. Un système de transformation (3) est disposé entre les diodes PIN (1, 2) dans la branche longitudinale. Les deux diodes reçoivent le même signal de régulation.
PCT/DE2003/001981 2002-09-03 2003-06-13 Circuit de régulation destiné à un amplificateur haute fréquence WO2004023651A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10240496.8 2002-09-03
DE2002140496 DE10240496A1 (de) 2002-09-03 2002-09-03 Regelschaltung für einen Hochfrequenzverstärker

Publications (1)

Publication Number Publication Date
WO2004023651A1 true WO2004023651A1 (fr) 2004-03-18

Family

ID=31502284

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/001981 WO2004023651A1 (fr) 2002-09-03 2003-06-13 Circuit de régulation destiné à un amplificateur haute fréquence

Country Status (2)

Country Link
DE (1) DE10240496A1 (fr)
WO (1) WO2004023651A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1578017A3 (fr) * 2004-03-19 2006-06-28 Feig Electronic GmbH Commutateur électronique pour connexions haute fréquence

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013123B4 (de) * 2004-03-19 2007-09-13 Feig Electronic Gmbh Elektronischer Schalter für Hochfrequenz-Verbindungen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754240A (en) * 1985-11-20 1988-06-28 Gte Telecomunicazioni, S.P.A. Pin diode attenuators
EP0667684A1 (fr) * 1994-02-09 1995-08-16 Lk-Products Oy Emmétteur-récepteur avec un dispositif de séparation des signaux de transmission et réception
EP0713288A2 (fr) * 1994-11-17 1996-05-22 AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL INC. Circuit de détection de signaux RF
US20020105391A1 (en) * 2000-04-19 2002-08-08 Yasuo Yamada Filter, antenna duplexer, and communication apparatus incorporating the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754240A (en) * 1985-11-20 1988-06-28 Gte Telecomunicazioni, S.P.A. Pin diode attenuators
EP0667684A1 (fr) * 1994-02-09 1995-08-16 Lk-Products Oy Emmétteur-récepteur avec un dispositif de séparation des signaux de transmission et réception
EP0713288A2 (fr) * 1994-11-17 1996-05-22 AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL INC. Circuit de détection de signaux RF
US20020105391A1 (en) * 2000-04-19 2002-08-08 Yasuo Yamada Filter, antenna duplexer, and communication apparatus incorporating the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1578017A3 (fr) * 2004-03-19 2006-06-28 Feig Electronic GmbH Commutateur électronique pour connexions haute fréquence

Also Published As

Publication number Publication date
DE10240496A1 (de) 2004-03-11

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